Restart MongoDB cluster

You can restart all pods of the cluster. When an exception occurs in a database, you can try to restart it.

Steps

Create an OpsRequest to restart a cluster.


kubectl apply -f - <<EOF
apiVersion: apps.kubeblocks.io/v1alpha1
kind: OpsRequest
metadata:
  name: ops-restart
  namespace: demo
spec:
  clusterName: mycluster
  type: Restart 
  restart:
  - componentName: mongodb
EOF

Check the pod and operation status to validate the restarting.

kubectl get pod -n demo
>
NAME                  READY   STATUS            RESTARTS   AGE
mycluster-mongodb-0   3/4     Terminating       0          5m32s

kubectl get ops ops-restart -n demo
>
NAME          TYPE      CLUSTER     STATUS    PROGRESS   AGE
ops-restart   Restart   mycluster   Succeed   1/1        3m26s

During the restarting process, there are two status types for pods.

STATUS=Terminating: it means the cluster restart is in progress.
STATUS=Running: it means the cluster has been restarted.

Restart a cluster with kbcli cluster restart command and enter the cluster name again.

kbcli cluster restart mycluster -n demo
>
OpsRequest mongodb-cluster-restart-pzsbj created successfully, you can view the progress:
      kbcli cluster describe-ops mongodb-cluster-restart-pzsbj -n demo

Validate the restart operation.

Check the cluster status to identify the restart status.

kbcli cluster list mycluster -n demo
>
NAME                   NAMESPACE        CLUSTER-DEFINITION        VERSION            TERMINATION-POLICY        STATUS         CREATED-TIME
mongodb-cluster        demo             mongodb                   mongodb-5.0        Delete                    Running        Apr 26,2023 12:50 UTC+0800

STATUS=Updating: it means the cluster restart is in progress.
STATUS=Running: it means the cluster has been restarted.